#!python3
# -*- coding utf-8 -*-
__authoer__ = 'pxYe'

#pi
from random import random
from math import sqrt
from time import clock

DARTS = 2**40
hits = 0
clock()

for i in  range(1, DARTS):
    x,y = random(), random()
    dist = sqrt(x**2 + y**2)

    if dist <= 1.0:
        hits = hits + 1

pi = 4 * (hits/DARTS)
print("PI的值是 %s" % pi)
print("程序运行时间是 %-5.5ss" % clock())